Electric-locomotive-cab underframe



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ELECTRI/G LOCOMOTIVE CAB UNDEFRAME l Filed Nov. 24, 1924 2 sheets-sheen Aug. 23, 1927.

W. M sHEEHAN ELECTRIC LOYCOMOTIVE CAB UNDERFRAME Filed Nov. 24, 1924 Y 2 Sheets-Sheet 2 IIIIIIIIIIIII Patented Aug. 23, 1927,

- UNlTEosTATl-:s

PATENT oFFIcE.

WILLIAM M. SHEEHAN, OF ST. LOUIS, MISSOURI, ASSIGNOR TO COMMONWEALTH STEEL COMPANY, OE ST. LOUIS, MISSOURI, A CORPORATION OF NEW JERSEY.

ELECTRIC-LOCOMOTIVE-CAB UNDERFRAME.

Application led November 24, 1924. .Serial No. 751,891.

My invention relates to electric locomotives and more particularly to the cab under frame which is carried by the truck and which in turn carries the body or cab of the locomotive.

An object of my invention is to provideia onepiece or integral underframe `having formed therewith various essential parts ,Which are normally fastened to the i'rame after it is constructed, or provision for Which must be made in the cab.

In the manufacture of fabricated car, truck, tender and locomotive parts,.some of these pieces are of such size and shape that if handled after entire or partial assembling i in the customary manner, that is, by crane connectedat the ends by chains or the like, there is a high percentage of breakage due to the Weight and shape of the assembled structure being handled and the manner of lifting it; This liability is eliminated in the use of my improved cab undertrame structure, Which is formed of a substantially box-shaped girder 'and which When attached. to the balance of' truck frame serves as a ybackbone for the Whole. Thus, another ob` ject of my invention is to provide a cab un` derframe sufficiently strong tovvvithsta'nd extraordinaiystrains of handling before assembly and during partial disassembly as Well as the strains during the operation of the vehicle. lVith these and other objects in View, my invention consists in certain novel features of construction and arrangement of parts, hereinafter more .fully described and claimed', and illustrated in the accompanying drawings, in which I Figure 1 is a top plan View ot one-half of myimproved electric locomotive cab'underframe.

Figure 2 is 'a side View of the underframe.

Figure 3 is a cross section taken on line 3 3 of Figure 2.

Figure 4 is a cross -section taken on line 4 4 of. Figure 1..- l

Figure 5 is a cross section taken on line 5-5 of Figure 2. f

Figure 6 is a bottom view of one-half of the underframe.

Figure 7 .is a cross section taken on line Tf-7 of Figurel.

Figure 8 is across section taken on line 8-8 of Figure 1.

is a transformer base.

Figure 9 is a cross section taken on line my cab underframe.

The bed of the cab underframe consistsk substantially of a box-shaped girder having substantial openings in its top and bottom Walls producing cross members 2,- 3, 4,5, 6, 7 8 and 9 connecting the sides 1. Vertical reinforcing ribs 35 are provided in conjunctionwith each of said cross members. Motor housings 10 and 11 are carried by the underframe and formed therewith. These, motor housings extend outwardly and lon-- gitudinalty away from the underframe at the points of jointure between the sides 1 and the end sill members 8 and 9.` `Integral ournal suppo ts 36 are provided in housings 10 and 11 for the rotor (not shown).

`\]ntegral projections 12 extend outwardly from sides 1 at various points and are provided With step-shaped ends 13. These stepshaped ends are adapted to support and be bolted to the locomotive cab Which is not shown.

On the underface under projections 12 are integral lugs 1'4 adapted to be connected With-the main or truck frame, not shown. Theuindersurfaces 15, 16, 17, 18, 19 and 20 of cross members 2, 3, 4, 5,' 6 and 7, respectively, arefinished and provided with bolt holes 21. These surfaces are adapted to be bolted to the main frame cross ties, not shown, and together With lugs 14 form a solid connection of the sides 1 located? between the locomotive cab underframe and the main frame.

22 and 23 are integrally formed trans- Verse members, being brake cylinder supports. The vertical sides 24 and 25 of these members are finished and adapted to carry .the brake cylinders. The portion 26 of the top side of the undertrame falling Within the radius of circle 27 (shown in Figure 1) provided in the frame so that a transformer may be fixed therto. A rheostat b'ase 29 is also provided on the top of the frame on cross members 4.and 5. A phase converter base 30 is provided near cross members 6 and 7. The remaining portions 31 of the top of the underframe are utilized as cab Vfloor supports.

Bolt holes 28 are The outer sides 32 of end sill membersS l and 9 are adapted to be utilized as motor '6o means Q ffor connecting said underframe to housing supports in which case the motor housings 10 and 11 would not be integral parts of the frame but would be fixed to tli'e motor bearing portions.

The shape of the motor housing is such that the longitudinal side is approximately in line with the step-shaped cab supporting members'13 on the outer ends of projections 12. Additional cab supporting members 33 are provided on the motor housing. t

The type of cab underframe described is particularly economical in construction and assembly. By forming. in one piece all of the above-mentioned Aparts a much stronger frame is produced than would be if the various parts using the same amountl of steel were individually fastened together.

The assembly `operation is practically eliminated as far as th.y underframe is concerned since the fr me itself is formed in one piece and provisionsare made thereon for a large number ofthe necessary operating parts. The integral construction of the rhe'ostat transformer and phase converter bases with the underframe' insures a solid foundation'forl these partsff at all times. The positive location of the parts permits, a better Weight distribution throughout the locoj motive and enables the builder to strengthen the portion ofthe frame most apt-to receive heavy]l .ads and alsoenables him to elimif nate unnecessarytweight. l The form vof my cab underframe is intrinsically box-shaped. The'projections 12, though integral, are 'appendages to the true box member as are the motor housings 10 and 11. .Openings 64 'are provided in the sides 1.for the purpose of decreasing the weight by elimination" of metal where it is not neqessary' iorthe strengthofthe frame. It is 'obvious'fthat changes in the construction and arrangement of parts of my improved electric lbcoi'notivecab underframe may be made and' substituted for those herein shown and desc ribed, without .departing from the nature and scope offmy'invention.

`I claim: i v

1. An electric locomotive cab underframe comprising a box girder with brake cylinder supports, a rheostat base, a phase converter basefa transformer base, means for connecting said underframe to the locomotive truck, means for connecting said underframe to the cab, and a motor journal support all formed integrally.

2. An electric locomotive cab underfram comprising a box girder with a brale cylinder support, a rheostat base,a phase converter,.(a se, a transformer base, means for connet: \ii'g said underframe to the truck,

the gib, and a motorxhousing all'formed'in- \tegrally.

3. A31 integral ".underframe formed substantially of a boxe der, and integral Ahaving a motor housing support formed at its end, said motor housing support being adapted to surround and protect a motor.

8. An underfraine comprising al boxshaped girder, -depending lugs on said girder "adapted to be connected to the locomotive main frame, and a motor housing support formedintegrally therewith.

9. An underframe comprising a substantially box-shaped ginder with substantial portions of its upper and lower faces cut away, portions of the lower face of said boxshaped girder being adapted to be connected to the locomotive main truck, and a motor housing support formed integrally therewith.

10. An underframe comprising a box-` said girder being adapted to be attached to the locomotive main frame, and a motor housing supportV formed integrally therewith.

11. .An underframe comprising a boxshaped girder with integral motor housing .supports extending longitudinally of said said horizontal projections to support the body of the cab.

13. An underframe havin formed integrally therewith step-shape cab supporting members.

14.. An electric locomotive cab underframe formed substantially of a box girder,

portions thereof forming cab iioor supporting members. f

' 15. An electric locomotive cab underframe having integrally formed therewith means for rigidly connecting said frame with the locomotive main frame distributed throughout its length.

. 16. An electric locomotive cab underframe having, formed therewith downwardly de ending lugs for rigid connection to the ocomotive main frame.

17. A11 electric v locomotive. cab. underframehaving formed therewith cross members, said cross members .being adapted to be attached to the locomotive main frame.

18. An electric locomotive crbti underrame having formed therewith cross members, and downwardl depending lugs, said cross members and ugs being adapted .to connect to the locomotive main frame.

V19. As a new article of manufacture, an

underframe being formed of a single substantially box shaped girder with cut away portions.

20. underframe bein form'ii "of afsingle girder,

a cross section o said girder throughout its len th being substantie ly box shaped.

n testimony whereof I hereunto aix my signature' this 20 day of November, 1924. i. WILLIAM M. SHEEHAN.

l 4 l As a new article of. manufacture, an 

